Mining practice at the Umbilin Coal Mine West-Central Sumatra (Memorandum) May 1952.
the umbilin coal mine is a goverment owned, underground mining operation locationed 167 kilometers by railroad northeast of padang in west-central sumatra. current production is at the rate of 80.000 metric tons of non-coking bituminous coal per year. a record production of 56.000 metric tons of good quality
Ketersediaan
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Pusat Sumber Daya Mineral, Batubara dan Panas Bumi - Jln. Soekarno Hatta No. 444, Bandung, Jawa Barat
PMB LA 1952-1